30results about How to "Overcoming Difficult Problems" patented technology

The invention relates to a craniofacial interactive restoration method of ancient human skull based on modern human soft tissue distribution, in particular comprising the following steps: step 1, geometric restoration of ancient human skull; 2, registration of that ancient human skull and the modern human skull; 3, craniofacial restoration of the soft tissue distribution based on the reference model; 4, construct a candidate data set of that craniofacial restoration result; Step 5, craniofacial interactive restoration based on statistical shape model. The invention has the beneficial effects of improving the accuracy of the craniofacial restoration method based on skull registration; To improve the accuracy of craniofacial reconstruction of ancient human skull; To improve the accuracy of craniofacial reconstruction.

The invention relates to a centrifugal fluid conveying pump, in particular to a stirring, cutting and breaking device of a slurry pump. The slurry pump comprises a pump body, a pump shaft and a pump base. An impeller and a stirring and breaking device are sequentially arranged on the pump shaft. The pump body and the pump base are fixedly connected through a front end cover. At least one cleaning water channel is correspondingly arranged at the lower end of the pump body and the upper end of the front end cover. Sealing rings corresponding to the cleaning water channels are arranged between the pump body and the front end cover. Water inlets of the cleaning water channels are connected with a water inlet pipe. Water outlets of the cleaning water channels are connected with high-pressure nozzles. The high-pressure nozzles correspond to the stirring and breaking device. According to the stirring, cutting and breaking device, locked rotating and dry grinding of the slurry pump can be effectively avoided, and the service life of equipment can be prolonged; and the impeller and the stirring and breaking device can cut and break various impurities, including solids, long and soft fibers and the like, contained in sewage, and the phenomena of difficult starting, overloading and dry grinding of the device are eradicated.

The invention discloses a dust collecting device for titanium tetrachloride production. The dust collecting device mainly consists of a charging hole, a discharging hole and a dust collector, wherein the charging hole and the discharging hole are respectively formed in the top of the dust collector, the lower part of the dust collector is a tapered structure, and a flange, a sealing pad and a blind plate are arranged on the bottom of the tapered structure in sequence; and a heating device is arranged outside the tapered structure on the lower part of the dust collector. According to the dust collecting device disclosed by the invention, the bottom of the dust collector is heated, so that a problem that the existing dust collector is poor in separating effect on titanium tetrachloride and the dust collecting residue is solved, the waste of titanium tetrachloride and pollution on environment during the dust collecting and residue exhausting are reduced; meanwhile, the production cost is lowered, and the labor environment of the operation worker is improved.

The embodiment of the invention provides an information labelling method and device for a game, a computer readable medium and electronic equipment, and relates to the technical field of computers. The method comprises the steps that in response to a first preset touch control operation applied to a first game object identification, a pointing identification is displayed; in response to a second preset touch control operation, according to the second preset touch control operation, the pointing direction and distance of the pointing identification are controlled; in response to the pointing direction of the pointing identification, the first game object identification points at a second game object identification, wherein the pointing distance is longer than a preset distance, and an information labelling region is displayed in a preset range of the pointing identification; the information labelling region is used for receiving information input. According to the technical scheme, theproblem can be solved to a certain extent that when a user memorizes an object relationship by reading a text, the difficulty is high, the user experience is improved, and the using viscosity of the user is improved.

The invention relates to a control protection circuit, which comprises a driving control module with at least one path of output, and further comprises sampling amplification modules arranged on each path of output line and used for collecting electric information on the corresponding output line and amplifying and outputting the electric information; the comparison and judgment module is connected with the sampling and amplifying module to receive the electric information output by the sampling and amplifying module, compares the electric information to judge whether the current output line outputs abnormally or not and outputs a corresponding judgment signal; and the switch control module is respectively connected with the comparison and judgment module and the driving control module and is switched on or off according to the judgment signal output by the comparison and judgment module so as to control the driving control module to work or not. The circuit is simple in structure and wide in application range, and safety and stability of the circuit are improved.

The invention relates to a method for preventing and controlling miridae, comprising the steps of evenly mixing gossypol acetate with mass fraction of 0.6-1.2% and spirotetramat with mass fraction of 0.03-0.05% based on a volume ratio of 1 to1, and selecting to spray from periphery towards interior when the sun just comes out. The invention provides the method for preventing and controlling the miridae, which can effectively prevent and control the miridae, and the prevention and control is highly efficient.

The invention belongs to the technical field of virus gene engineering of aquatic animals, and particularly relates to a method for constructing a reverse genetic system of red-spotted grouper nervousnecrosis virus (RGNNV). According to the invention, CMV is used as a promoter to construct an eukaryotic expression plasmid containing an RGNNV genome; the RGNNV is rescued by adopting a method of combining human embryo kidney 293T cells with high transfection efficiency and striped snakehead cells (SSN-1) which efficiently replicate the RGNNV, so that the problem of low transfection efficiency of fish cells is solved.

The invention relates to the technical field of oil and gas field production and development, in particular to a low-filtration-loss long-seam forming clean fracturing process. According to the process, a weakly acidic clean fracturing fluid which is low in residue, low in damage, good in temperature resistance, shearing resistance and sand carrying performance and capable of being used immediately after being prepared on site and being continuously mixed is matched with a novel efficient filtrate loss reducer, the filtrate loss property of the clean fracturing fluid is greatly reduced throughthe novel efficient filtrate loss reducer, the fracture forming performance of the clean fracturing fluid is improved, the damage to a reservoir can be effectively reduced, the filtration loss of theclean fracturing fluid in the reservoir during fracturing can be reduced, fluid consumption of the fracturing fluid is effectively reduced under the same fracturing scale, and low-filtration-loss clean fracturing long-seam forming is realized. According to the process, respective defects of the clean fracturing fluid and a guanidine gum fracturing fluid are overcome, the filtration loss of the clean fracturing fluid in the reservoir during fracturing construction is reduced, the fluid fracture forming efficiency and the construction efficiency are improved, the fracturing fluid consumption and the damage to the reservoir are reduced, a stratum is effectively protected, and the water saving and reduction of a fracturing comprehensive cost are facilitated.

The invention relates to a primer pair, a kit and a method for detecting whether people smoke or not based on saliva microorganisms, and belongs to the technical field of bioinformatics. The kit comprises a primer pair, a PCR reagent and a negative control; the primer pair comprises an upstream primer and a downstream primer; the upstream primer consists of a tag sequence and an upstream primer sequence in sequence; the downstream primer consists of a tag sequence and a downstream primer sequence in sequence; the sequence of the upstream primer is shown as SEQ ID NO: 1; and the sequence of thedownstream primer is shown as SEQ ID NO: 2. The method comprises the steps of firstly collecting a saliva sample of a person to be detected, then extracting total DNA in saliva, then carrying out PCRamplification, carrying out sequencing after a PCR product is recovered and purified, carrying out clustering and species classification analysis of OTUs, and then carrying out judgment according toan analysis result. The method can effectively predict whether the crowd has a long-term smoking habit, and the detection process is noninvasive, low in cost, rapid, convenient, high in safety and easy to popularize and apply.

The invention relates to the technical field of co-processing of solid waste in a cement kiln, in particular to an off-line incineration device used for co-processing of solid waste in the cement kilnand a method. The off-line incineration device comprises a furnace body, a spouting necking is fixedly installed at the top of the furnace body, a mixed combustion chamber is fixedly installed at thetop of the spouting necking, a waste gas outlet pipeline is fixedly installed at the top of the mixed combustion chamber, a fluidized bed combustion chamber and a layered combustion chamber are arranged in the interior of the furnace body, an adjusting gate plate is movably installed between the fluidized bed combustion chamber and the layered combustion chamber, and a primary air pipe is fixedlyinstalled at the bottom of the fluidized bed combustion chamber. According to the off-line incineration device for co-processing of the solid waste in the cement kiln and the method, the defects of an on-line incineration device are overcome, off-line arrangement can be carried out between a decomposition furnace and the rotary kiln in the aspect of utilization of incinerated materials and wasteheat and waste gas, the mutual influence between the decomposition furnace and the rotary kiln is effectively reduced; and the final co-processing efficiency and effect in the cement kiln are furtherimproved.

The invention discloses a method for controlling the stability of a high-stage stope filling body. The method comprises two stages, in the first stage, a stope to be mined is divided into a plurality of progressive layers from bottom to top, each progressive layer is divided into a plurality of mining units by designing the positions of blast holes, and only one or two mining units are subjected to charge blasting each time; after single progressive layered blasting is finished, a downward step surface extending from the boundary of the stope to the center is formed, and by controlling the ore removal amount of the bottom of the stope, the distance capable of limiting deformation and damage of a filling body is always reserved between a blasting ore heap and the original rock above; after mining of a single progressive layer is finished, the mining unit of the previous progressive layer is blasted, ore drawing is conducted on the bottom, and the distance between the blasted ore pile and the original rock above is kept unchanged until mining of all the progressive layers is finished; and in the second stage, ore drawing is performed at the bottom of the stope and corresponding waste rocks are supplemented at the top of the stope for several times until all ores are drawn and the stope is filled with the waste rocks, so that filling bodies of adjacent stopes on two sides of the stope are always kept stable.